We use cookies to improve your experience. By your continued use of this site you accept such use. To change your settings please see our Privacy Policy .
I Understand
Climate Change Initiative

In 2010, UMC led the industry by implementing the UMC Climate Change Policy as its highest guiding principle. In addition, the company formulated the UMC Low-Carbon Commitment guidelines for carbon reduction plans.



UMC Climate Change Policy




UMC Low-Carbon Commitment



For energy and greenhouse gas management, UMC has recently formulated various environmental protection objectives for various phases and dimensions along with actual implementation plans.



Climate Change Risks and Opportunities

The results of UMC climate change top 3 risks and opportunities in short and mid/long terms are analyzed according to the TCFD shown below:
UMC_climate_change_risk_zh.png (187 KB)



GHG Reduction Target and Plan

According to the product carbon footprint and greenhouse gas emissions inventory results, the major contributor of UMC's product carbon footprint is manufacturing, with the major sources being electricity and fluorinated greenhouse gases (F-GHGs). UMC has thus formulated plans to reduce electricity consumption and F-GHG emissions in order to reduce its carbon footprint.


The reduction targets and plans

Reduction Goal

2019 Actual Reduction

  • Compared to 2010, reduce intensity of fluorinated greenhouse gas emissions by 36% in 2020.
  • Compared to 2010, reduce intensity of fluorinated greenhouse gas emissions by 55% in 2025.

Reduced intensity of fluorinated greenhouse gas emissions by 61%

  • Compared to 2015, reduce intensity of electricity consumption by 10% in 2020.
  • Compared to 2015, reduce intensity of electricity consumption by 15% in 2025.

Additional reduction of 49,540 Mwh of electricity consumption for the year, reaching the annual targeted goal.


F-GHGs Reduction

In addition to carbon reduction each year, UMC established the Fluorinated Greenhouse Gas Reduction Taskforce in 1999 to promote greenhouse gas reduction. Moreover, the company set greenhouse gas reduction goals for the various phases of the program, and currently, the reduction program is in Stage 3. UMC shall continue to implement F-GHGs reduction projects. F-GHGs reduction in 2019 reached 0.996 million tons which was a 61% reduction compared to 2010. Such results showed that UMC managed to achieve Phase 3 objectives ahead of schedule. UMC has already attained the reduction goal for 2020, which is 30% lower than 2010 levels, as stipulated by the World Semiconductor Council. At this stage, UMC has integrated with international trends and has cooperated with national policies to formulate reduction goals for 2025.




F-GHGs Reduction Practice

  1. All new equipment shall be installed with a high performance local scrubber for N2O and F-GHGs.
  2. All new CVD equipment in new facilities shall utilize NF3 gases



F-GHGs reduction in 12-inch fabs

All UMC's 12-inch fabs, including Fab 12A ,Fab 12A’s new phases, Fab 12i and the fab of subsidiary USC have adhered to UMC's F-GHGs reduction practices. Based on the Institute of Electrical and Electronics Engineers (IEEE) 1680.1: 2018 standard, the total F-GHGs reduction rate for entire fabs has exceeded the required 75%.



Energy Reduction and Management 

UMC's energy consumption mainly relies on purchased electricity, followed by a small amount of natural gas. The largest source of UMC's greenhouse gas emissions is from purchased electricity. Therefore, reducing energy consumption is the effective key to alleviate the environmental impact caused by the greenhouse effect. Through the CS Committee’s company-wide carbon reduction goals and development plans, coordinate/ integrate departmental energy saving and carbon reduction strategies and programs. Hold regular committee meetings to review the implementation outcome, and continue to introduce energy conservation technologies and implement energy efficiency improvement programs in relevant facilities.


Total power savings in 2019

Equivalent  CO2  reduction

49,540 Mwh

About 25,372 tons


Total natural gas savings in 2019

EquivalentCO2 reduction

15,585 Mwh

About 3,147 tons

Aside from UMC’s ongoing energy efficiency improvement efforts, it is also actively setting up renewable energy sources in the fab, and has listed solar energy systems as a new fab standard design and construction project. UMC has completed the installation of the 4,335 KWp solar energy system, which is expected to generate up to 2.8 million KWh of electricity each year. The installation capacity is the highest among Taiwan's wafer industry, thereby fully demonstrating UMC’s commitment to green energy and full support for clean energy.


In October 2018, UMC's two solar power generators in Fab 12A, installed in cooperation with the government's renewable energy policy, were reviewed and approved by government and third-party power survey agencies. UMC continues to pursue renewable energy certifications, and obtained 347 such certifications in 2019.




Solar Energy Output in Recent Years


2019_CSR_D-2_en.jpg (82 KB)


Furthermore, UMC promotes energy saving programs in the office and public areas, accompanied with promotional activities and training to enhance employees' ideas and habits in energy saving and greenhouse gas reduction.



Contact Us